| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Magnetic bailer | US10863950 | 2004-06-08 | US07174957B1 | 2007-02-13 | Sarfraz A. Jokhio |
| A bailer is configured to remove particulate solids from fluid passing through the bailer. The bailer preferably includes a housing that includes an intake and an outlet to permit the flow if well fluids through the housing. The bailer also includes a magnetic plate that includes at least one aperture that provides a path for the fluid flow. The bailer optionally includes one or more elongate magnetic bars that extend along the longitudinal axis of the bailer housing. The bailer can be used in conjunction with other components in a downhole pumping system, a surface pumping system or a transport system. | ||||||
| 42 | Magnet arrangement and method for use on a downhole tool | US10865486 | 2004-06-10 | US07137449B2 | 2006-11-21 | Benny L. Silguero |
| The present invention relates to a downhole tool for removing metallic debris from a well bore. The downhole tool includes a plurality of magnets disposed on the tool body. The plurality of magnets are arranged in a bucking arrangement such that repulsing forces are generated between neighboring pairs of the plurality of magnets. The bucking arrangement results in an expanded reach of the magnetic fields of the magnets to enhance the removal of metallic debris. | ||||||
| 43 | Metal debris cleanout system and method | US11166312 | 2005-06-24 | US20060049111A1 | 2006-03-09 | David Ruttley |
| A cleanout system and method for removal of metal debris from a fluid flow, such a flow of re-circulated drilling mud employs one or more magnetic unit positioned in the path of the fluid for collecting metal particles from the flow. The magnetic unit has a removable magnet core positioned in a non-magnetic sleeve. When the core is removed from the sleeve the attracted metal particles are allowed to drop from the sleeve under gravity to facilitate their collection and disposal. A fluid deflector is positioned upstream from each magnetic unit, protecting the magnetic unit from direct impact by the strong flow. The magnetic units are allowed to pivot from side-to-side and adjust their position in the flow. | ||||||
| 44 | Apparatus for retrieving metal debris from a well bore | US09827116 | 2001-04-05 | US20020057151A1 | 2002-05-16 | David J. Ruttley |
| A tool for retrieving metal debris from a wellbore has a plurality of magnet assemblies spaced longitudinally along a tool body. Each magnet assembly has a magnet member, which forms a primary debris settling area. Each magnet member is protected by a magnet protector. A secondary debris settling area is formed between a magnet and an adjacent magnet protector to allow utilization of the residual magnetic force created by the magnet members. The secondary debris settling area occupies at least half of the surface area of the primary settling area. | ||||||
| 45 | Apparatus for retrieving metal objects from a wellbore | US09602379 | 2000-06-22 | US06357539B1 | 2002-03-19 | David J. Ruttley |
| A tool for retrieving metal objects from a wellbore has a plurality of magnet assemblies spaced longitudinally along a tool body. Each magnet assembly has a plurality of magnet members, which can be arcuate or longitudinal, covering a majority surface area of the tool body. In the embodiment of the invention having longitudinal members, magnet protectors are secured immediately adjacent to a corresponding magnet member for deflecting striking force of the metal particles being attracted to the magnet during rotation of the tool. A trap space if formed between the magnet and an adjacent magnet protector for retaining more metal particles within the magnet assemblies. | ||||||
| 46 | Apparatus for retrieving metal objects from a wellbore | US09789876 | 2001-02-21 | US20010013413A1 | 2001-08-16 | David J. Ruttley |
| A tool for retrieving metal objects from a wellbore has a plurality of magnet assemblies spaced longitudinally along a tool body. Each magnet assembly has a plurality of magnet members, which can be arcuate or longitudinal, covering a majority surface area of the tool body. In the embodiment of the invention having longitudinal members, magnet protectors are secured immediately adjacent to a corresponding magnet member for deflecting striking force of the metal particles being attracted to the magnet during rotation of the tool. A trap space if formed between the magnet and an adjacent magnet protector for retaining more metal particles within the magnet assemblies. | ||||||
| 47 | Junk bailer apparatus for use in retrieving debris from a well bore of an oil and gas well | US900633 | 1997-07-25 | US5944100A | 1999-08-31 | James E. Hipp |
| An apparatus for removing debris from an oil and gas well is operable with fluid pressure that reciprocates a valving member between upper and lower positions. The valving member seals against a piston in a lowermost position so that the fluid pressure can be used to move both valve member and piston downwardly. The valving member has a valving member spring that, when fully compressed, separates the valving member and piston. Once the valving member and piston are separated, the piston is no longer supported in the lowermost position because fluid pressure is relieved through the piston bore. A piston spring then thrusts the piston upwardly, causing it to pump fluid from a position outside the lower end of the tool body through an intake portion into a cavity, pulling debris therewith. Pivoting flexible finger members or brushes are positioned at the lower end of the tool body and are moveable between open and closed positions for intaking the debris when in the opened position and for trapping debris when in the closed position. Staging magnets are attached to the body of the tool. The flexible fingers or brushes move the debris from magnet to magnet in stages, finally reaching a storage area. | ||||||
| 48 | Electromagnetic lifting device | US751261 | 1996-11-18 | US5731705A | 1998-03-24 | Burl H. Guinn |
| An electromagnetic pick-up device for use with a forklift or other vehicle having a power lifting mechanism thereon, wherein the device is adapted to be easily picked up by the lifting mechanism and is completely self-contained and electrically powered such that it can be transported and manipulated by the vehicle into tight areas, wherein electromagnets are pivotally, swingably mounted on the forward end of the device and are substantially positioned beyond the forward end, whereby the device is particularly suited for picking up difficult-to-handle metal pieces which normally present handling dangers, and which is adapted to be easily released from the vehicle without any need for disconnecting any electrical, hydraulic, or the like power transmitting equipment from the vehicle. | ||||||
| 49 | Magnetic junk retriever | US11378 | 1979-02-12 | US4226285A | 1980-10-07 | Meekie D. Moseley, Jr. |
| An improved magnetic junk retriever arranged to magnetize a drill bit just prior to its removal from the bottom of the well bore. A wound, electromagnet subassembly is connected between the drill bit and the drill collar. A battery-pack tool is used to energize the electromagnet by lowering the tool through the bore of the drill pipe and collars to contact pins projecting into the bore of the sub. Energizing the electromagnet causes the drill bit to be magnetized. | ||||||
| 50 | Repulsing clays on drill bits | US29635872 | 1972-10-10 | US3818996A | 1974-06-25 | MCCALEB S |
| Bit balling is prevented by impressing a negative electrical charge on the drill bit by the use of bi-metallic electromotive potential differences, batteries or other electrical energy sources.
|
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| 51 | Drilling apparatus | US3637033D | 1970-01-06 | US3637033A | 1972-01-25 | MAYALL WILLIAM |
| The invention relates to an assembly for collecting magnetic waste material for insertion in the drill string of drilling apparatus. The assembly includes a plurality of magnets held in place around a first nonmagnetic tubular member by means of a second nonmagnetic tubular member which is swaged around the magnets to form a longitudinally extending recess between each pair of magnets.
|
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| 52 | Magnetic junk basket | US3520359D | 1968-06-27 | US3520359A | 1970-07-14 | EHRLICH HERMAN T |
| 53 | Electromagnetic well service tool | US3441307D | 1967-07-25 | US3441307A | 1969-04-29 | FARMER CHARLIE F |
| 54 | Combined junk basket | US54001366 | 1966-04-04 | US3378089A | 1968-04-16 | MARSH KENNETH R |
| 55 | Magnetic junk retrieving tool | US36239664 | 1964-04-24 | US3243218A | 1966-03-29 | JENNINGS THELMA E |
| 56 | Fishing tool with magnet and fluid ports | US26159563 | 1963-02-28 | US3203491A | 1965-08-31 | TURLEY GERALD O |
| 57 | Magnetic junk basket assembly for drill strings | US2060760 | 1960-04-07 | US3067821A | 1962-12-11 | CARL CROOKS GEORGE |
| 58 | Magnetic grappling mechanism for lost well drilling apparatus | US84318359 | 1959-09-29 | US3020079A | 1962-02-06 | HERBERT SAMOL |
| 59 | Well fishing tool | US68754657 | 1957-10-01 | US2977147A | 1961-03-28 | COOPER ALEXANDER T |
| 60 | Protective elements displaceable on a lifting sling | US72592458 | 1958-04-02 | US2965407A | 1960-12-20 | HANS MEISEN |
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